Constant-force self-locking differential screw fine-tuning device

Abstract

The invention discloses a constant-force self-locking differential screw fine-tuning device which comprises a regulating body, a main connecting rod body and a secondary connecting rod body, wherein internal threads of the main connecting rod body and external threads of the secondary connecting rod body are respectively connected with external threads and internal threads of the regulating body to form a differential fine-tuning device. The constant-force self-locking differential screw fine-tuning device has a simple structure, is convenient for operation, consists of two threads with different thread pitches and has a constant-force self-locking performance and a differential screw fine-tuning function; the constant-force self-locking differential screw fine-tuning device can be used for accurately and finely tuning hole pitches at two ends of the connecting rod, keeping relative positions of central lines of holes at two ends of the connecting rod constant to automatically meet the precision requirement of mounting position on a member or a part, automatically eliminating the axial clearance of a thread pair and realizing locking at constant force. According to the constant-force self-locking differential screw fine-tuning device, the defects that the hole pitches and the parallism at two ends of the connecting rod cannot be adjusted and self locked at constant force by using the traditional connecting rod adjusting device are made up.

Description

technical field [0001] The invention relates to a fine-tuning device, in particular to a constant-force self-locking differential screw fine-tuning device. Background technique [0002] In the process of mechanical design and mechanical manufacturing, people often use connecting rods to connect two components or parts that have relative motion. In the link of adjusting the length of the connecting rod, a double-ended screw, a sliding spline or a telescopic sleeve is usually used to adjust the distance between the holes at both ends of the connecting rod. The above-mentioned connection forms all need to be locked during adjustment. Once supplementary locking is performed, it will be difficult to accurately ensure the parallelism and hole distance of the holes at both ends of the connecting rod at the same time, thereby affecting the movement accuracy of components or parts. Contents of the invention [0003] The object of the present invention is to provide a constant forc...

AI Technical Summary

Problems solved by technology

The above-mentioned connection forms need to be locked during adjustment. Once supplementary locking is performed, it will be difficult to accurately ensure the parallelism and hole distance of the holes at both ends of the connecting rod at the same time, which will affect the movement accuracy of components or parts.

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